Eicosenoic acid may refer to one of three closely related chemical compounds:

• 9-Eicosenoic acid (gadoleic acid), an omega-11 fatty acid (20:1ω11)
• 11-Eicosenoic acid (gondoic acid), an omega-9 fatty acid (20:1ω9)
• 13-Eicosenoic acid (paullinic acid), an omega-7 fatty acid (20:1ω7)

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